Overview: In terms of definition, Heat is known as the amount of energy that flows spontaneously from a warmer object to a cooler one. From the very first age of humankind, heat is produced from the combustion of fire. To the modern age of humankind, heat is being applied such as the heat engine, thermodynamics... Generally speaking, energy is produced due to the temperature. There are 6 tiers of Heat buildings:
Fire provides a source of abundant heat and light, and has a wide variety of uses.